var WM_acceptsCookies = false;
if(document.cookie == '') {
    document.cookie = 'WM_acceptsCookies=yes'; // Try to set a cookie.
    if(document.cookie.indexOf('WM_acceptsCookies=yes') != -1) {
    WM_acceptsCookies = true; 
    }// If it succeeds, set variable
} else { // there was already a cookie
  WM_acceptsCookies = true;
}

function WM_setCookie (name, value, hours, path, domain, secure) {
    if (WM_acceptsCookies) { // Don't waste your time if the browser doesn't accept cookies.
    var not_NN2 = (navigator && navigator.appName 
               && (navigator.appName == 'Netscape') 
               && navigator.appVersion 
               && (parseInt(navigator.appVersion) == 2))?false:true;

    if(hours && not_NN2) { // NN2 cannot handle Dates, so skip this part
        if ( (typeof(hours) == 'string') && Date.parse(hours) ) { // already a Date string
        var numHours = hours;
        } else if (typeof(hours) == 'number') { // calculate Date from number of hours
        var numHours = (new Date((new Date()).getTime() + hours*3600000)).toGMTString();
        }
    }
    document.cookie = name + '=' + escape(value) + ((numHours)?(';expires=' + numHours):'') + ((path)?';path=' + path:'') + ((domain)?';domain=' + domain:'') + ((secure && (secure == true))?'; secure':''); // Set the cookie, adding any parameters that wer
    }
} // WM_setCookie

function WM_readCookie(name) {
    if(document.cookie == '') { // there's no cookie, so go no further
    return false; 
    } else { // there is a cookie
    var firstChar, lastChar;
    var theBigCookie = document.cookie;
    firstChar = theBigCookie.indexOf(name); // find the start of 'name'
    var NN2Hack = firstChar + name.length;
    if((firstChar != -1) && (theBigCookie.charAt(NN2Hack) == '=')) { // if you found the cookie
        firstChar += name.length + 1; // skip 'name' and '='
        lastChar = theBigCookie.indexOf(';', firstChar); // Find the end of the value string (i.e. the next ';').
        if(lastChar == -1) lastChar = theBigCookie.length;
        return unescape(theBigCookie.substring(firstChar, lastChar));
    } else { // If there was no cookie of that name, return false.
        return false;
    }
    }   
} // WM_readCookie

function WM_killCookie(name, path, domain) {
  var theValue = WM_readCookie(name); // We need the value to kill the cookie
  if(theValue) {
      document.cookie = name + '=' + theValue + '; expires=Fri, 13-Apr-1970 00:00:00 GMT' + ((path)?';path=' + path:'') + ((domain)?';domain=' + domain:''); // set an already-expired cookie
  }
} // WM_killCookie

function turnon(nr)
{
    if (document.layers)
    {
        current = (document.layers[nr].display == 'block') ? 'block' : 'block';
        document.layers[nr].display = current;
    }
    else if (document.all)
    {
        current = (document.all[nr].style.display == 'block') ? 'block' : 'block';
        document.all[nr].style.display = current;
    }

    else if (document.getElementById)
    {
        vista = (document.getElementById(nr).style.display == 'block') ? 'block' : 'block';
        document.getElementById(nr).style.display = vista;
    }
}
function turnoff(nr)
{
    if (document.layers)
    {
        current = (document.layers[nr].display == 'none') ? 'none' : 'none';
        document.layers[nr].display = current;
    }
    else if (document.all)
    {
        current = (document.all[nr].style.display == 'none') ? 'none' : 'none';
        document.all[nr].style.display = current;
    }
    else if (document.getElementById)
    {
        vista = (document.getElementById(nr).style.display == 'none') ? 'none' : 'none';
        document.getElementById(nr).style.display = vista;
    }
}